(261) Maternal and neonatal biometry during COVID 19 Pandemic

Objective: The COVID-19 pandemic was a major stressor for people and generated lifestyle alterations in physical activity and eating habits. We sought to determine if being pregnant and delivering during the COVID-19 pandemic was associated with changes in gestational weight gain (GWG) per the Institute of Medicine (IOM) guidelines and frequency of small (SGA) and large (LGA) for gestational age neonates

Study Design: Secondary analysis of a multicenter observational cohort of pregnant people who delivered during (June-December 2020) or prior to COVID-19 pandemic (March-December 2019). Exposure to pandemic was defined as being pregnant >3 months and delivering during the pandemic. People with missing BMI, multiple gestation, or congenital anomalies were excluded. The primary outcome was frequency of optimal IOM recommended GWG based on pre-pregnancy BMI. Neonatal outcomes included birthweight, ponderal index, and frequency of SGA ( < 10th percentile), LGA ( >90th percentile) and abnormal head circumference for livebirths. Multivariable regression analysis was used to determine associations between exposure to pandemic and outcomes.

Results: Pregnant people (4225) exposed to the pandemic were older and more likely to have gestational diabetes compared with those who delivered prior to COVID-19 pandemic (6492).The frequency of GWG consistent with IOM guidelines was 28% during pandemic and 27.6% before the pandemic (Table 1). The frequencies of GWG above and below IOM recommended weight gain were also not different between the two groups. Neonatal outcomes including birthweight, ponderal index, and frequency of SGA, LGA, and abnormal head circumference for livebirths were similar between both groups (Table 1).

Conclusion: Being pregnant and delivering during the COVID19 pandemic was not associated with changes in GWG or neonatal biometry